In 1840, Mr. Simpson, a Scotsman, foresaw potential in developing India as a major centre for building coaches and carriages. With a little spirit he nudged his dream and Simpson & Co was born. Simpson became a pioneer in railway coaches, motor cars, steam passenger buses, public service vehicles... India's Road Transport Industry was ushered into a new era.

Simpsons became the first to recognise the potential of diesel as a fuel, and self started the diesel era in the country in 1951. And in 1955, Simpsons became the first Indian Company to indigenously manufacture diesel engines for surface transport vechicles.